2010 AUDI S5 Service Brakes Problems

1) THE MAIN SAFETY CONCERN IS THE 7 SPEED DSG/S-TRONIC AUTOMATIC TRANSMISSION WHICH FEELS JERKY WHEN REACHING TO A STOP; THE BREAKS FULLY ENGAGED AND THE VEHICLE TRIES A SUDDEN MOVE FORWARD DUE TO THIS. VARIOUS TPI'S RELATED TO THE PROBLEM (TPI 2023830/1 JERK WHEN STOPPING, HARD 2-1 SHIFT, S-TRONIC). AUDI DEALERSHIPS ARE ASKING FOR ABOUT 500$ JUST TO UPGRADE THE SOFTWARE ON THE TRANSMISSION WITHOUT A GUARANTEE THIS WILL FIX THE PROBLEM. ALSO WHEN SHIFTING FROM N TO D IT IS VERY SUDDEN AND FORCEFUL WHICH FEELS UNSAFE. 2) BRAKE SAFETY CONCERN: THE BREAK PEDAL SINKS SLOWLY TO THE FLOOR UNDER PRESSURE ALTHOUGH THE BREAKS WERE COMPLETELY SERVICED (NEW ROTORS, PADS, MASTER BREAK CYLINDER AND BRAKE FLUID). TESTED OTHER AUDI VEHICLES AND A SIMILAR BEHAVIOR WAS NOTICED. 3) I HAD ALSO A FAILED THERMOSTAT WHICH I FOUND TO BE UNDER WORKSHOP CAMPAIGN 19H3 2024932/1 THAT INDICATED SAME PART NUMBER...